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Mathematics 16 Online
OpenStudy (anonymous):

4 + SR of 27 Divided by 2-3 SR of 27

OpenStudy (anonymous):

hang on, need a pen

OpenStudy (anonymous):

need the work or just the answer?

OpenStudy (anonymous):

could you do the work?

OpenStudy (anonymous):

\[(4+\sqrt{27})/(2-\sqrt{27})\] multiply top and bottom by (2 + root27), then foil. this gives you a numerator of 8+6root27+27 and a denominator of 4-27, which simplifies to a numerator of 35+6root27 over -23, which again simplifies to 35+18root3, all over -23

OpenStudy (anonymous):

if you need more specific expl, let me know

OpenStudy (anonymous):

wow i got something a bit different for the numerator and denominator

OpenStudy (anonymous):

what did you get?

OpenStudy (anonymous):

i got 8+12root27 + 2root27+81 for the numerator

OpenStudy (anonymous):

for the denominator i got 4-9root27

OpenStudy (anonymous):

oh, ha, that's because i didn't see the 3 in the orig problem. sorry hang on, let me do it again.

OpenStudy (anonymous):

your numerator is correct but needs to be simplified. your denominator is wrong - it should be 4-9*27, which is 4-81, which is -77

OpenStudy (anonymous):

why the *?

OpenStudy (anonymous):

that means multiply

OpenStudy (anonymous):

the numerator simplifies down to 89+42root3

OpenStudy (anonymous):

no i meant for the denominator

OpenStudy (anonymous):

i know, it means its 4 minus 9times27

OpenStudy (anonymous):

okay so hold on after i foil my number would simplify to 89+14root27. my denonimator would be 4-9*27?

OpenStudy (anonymous):

not number, i meant numerator.

OpenStudy (anonymous):

yes, and then that denominator is -77, and the numerator can be simplified further: root27 is 3root3, so 14root27 is 14*3root3 which is 42root3

OpenStudy (anonymous):

oooooh i get it. so would 89+42root3 over -77 the answer or do i simpify even more?

OpenStudy (anonymous):

yes, that's as far as you can go. you're done!

OpenStudy (anonymous):

Thank so much :0]

OpenStudy (anonymous):

Thank so much :0]

OpenStudy (anonymous):

my pleasure!

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